Shower PE Jelq Lube

For you shower jelqing guys what do you use? I find it easier sometimes to just get it done in the shower since I’m all warmed up. Any specific brands or products?

My wife went through a phase of using some kind of slime in a bottle marketed as a “skin care” lotion. When she’d take a shower it would make the tub very slippery. I almost fell a couple of times. She finally did, and wound up with two months off work due to back surgery.

“Let’s be careful in there…”